The Seat,valve, cataloged under National Stock Number 4820-01-231-8635, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Crane Co Div Valve Div. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-231-8635 |
| Primary Part Number | DB76 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Crane Co Div Valve Div |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.531 INCHES NOMINAL IN |
| Flange Diameter | 4.906 INCHES NOMINAL IN |
| Style Designator | THREADED FLANGED |
| Material Document and Classification | ASTM A216 GR. WCB ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Body Inside Diameter | 4.250 INCHES NOMINAL IN |
| Under Flange Height | 1.934 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Seating Surface Shape | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| DB76 PRIMARY | Crane Co Div Valve Div (USA) |
| 32813 PIECE8A 4IN LP INSP DB76 PRIMARY | Crane Co Div Valve Div (USA) |
| 32813 143 1/2U PIECE 8A 4IN | Crane Co Div Valve Div (USA) |
| Reference | Meaning |
|---|---|
| 32813 | D/9 Drawing number reference only Crane Co Div Valve Div |
NSN 4820-01-231-8635 is a Seat,valve, manufactured by Crane Co Div Valve Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-231-8635 has 3 manufacturer part numbers on file: DB76 (Crane Co Div Valve Div), 32813 PIECE8A 4IN LP INSP DB76 (Crane Co Div Valve Div), 32813 143 1/2U PIECE 8A 4IN (Crane Co Div Valve Div).
Key specifications for DB76: Flange Seat to Disk End Height: 0.531 INCHES NOMINAL IN; Flange Diameter: 4.906 INCHES NOMINAL IN; Style Designator: THREADED FLANGED; Material Document and Classification: ASTM A216 GR. WCB ASSN STD SINGLE MATERIAL RESPONSE SEAT. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.